mul104.vhd

在gf(2^13)中

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-- Company: 
-- Engineer:
--
-- Create Date:    20:39:25 04/01/08
-- Design Name:    
-- Module Name:    mul104 - Behavioral
-- Project Name:   
-- Target Device:  
-- Tool versions:  
-- Description:
--
-- Dependencies:
-- 
-- Revision:
-- Revision 0.01 - File Created
-- Additional Comments:
-- 
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library IEEE;
use IEEE.STD_LOGIC_1164.ALL;
use IEEE.STD_LOGIC_ARITH.ALL;
use IEEE.STD_LOGIC_UNSIGNED.ALL;

---- Uncomment the following library declaration if instantiating
---- any Xilinx primitives in this code.
--library UNISIM;
--use UNISIM.VComponents.all;

entity mul104 is
port(
	mul104_in:in std_logic_vector(12 downto 0);	  --msb_lsb
	mul104_out:out std_logic_vector(12 downto 0)
	);
end mul104;

architecture Behavioral of mul104 is

begin

mul104_out(0)<=mul104_in(8);
mul104_out(1)<=mul104_in(2) xor mul104_in(1) xor mul104_in(8) xor mul104_in(9) xor mul104_in(10) xor mul104_in(3) xor mul104_in(12) xor mul104_in(11);
mul104_out(2)<=mul104_in(3) xor mul104_in(9) xor mul104_in(4) xor mul104_in(2) xor mul104_in(12) xor mul104_in(10) xor mul104_in(0) xor mul104_in(11);
mul104_out(3)<=mul104_in(1) xor mul104_in(3) xor mul104_in(2) xor mul104_in(11) xor mul104_in(0) xor mul104_in(8) xor mul104_in(5) xor mul104_in(4);
mul104_out(4)<=mul104_in(4) xor mul104_in(1) xor mul104_in(6) xor mul104_in(8) xor mul104_in(9) xor mul104_in(10) xor mul104_in(3) xor mul104_in(5);
mul104_out(5)<=mul104_in(2) xor mul104_in(6) xor mul104_in(11) xor mul104_in(4) xor mul104_in(9) xor mul104_in(7) xor mul104_in(0) xor mul104_in(5) xor mul104_in(10);
mul104_out(6)<=mul104_in(3) xor mul104_in(1) xor mul104_in(10) xor mul104_in(5) xor mul104_in(7) xor mul104_in(11) xor mul104_in(6) xor mul104_in(12) xor mul104_in(8);
mul104_out(7)<=mul104_in(8) xor mul104_in(6) xor mul104_in(4) xor mul104_in(11) xor mul104_in(9) xor mul104_in(12) xor mul104_in(7) xor mul104_in(2);
mul104_out(8)<=mul104_in(12) xor mul104_in(8) xor mul104_in(3) xor mul104_in(7) xor mul104_in(5) xor mul104_in(10) xor mul104_in(9);
mul104_out(9)<=mul104_in(4) xor mul104_in(11) xor mul104_in(9) xor mul104_in(6) xor mul104_in(10) xor mul104_in(8);
mul104_out(10)<=mul104_in(11) xor mul104_in(5) xor mul104_in(9) xor mul104_in(7) xor mul104_in(12) xor mul104_in(10);
mul104_out(11)<=mul104_in(10) xor mul104_in(0) xor mul104_in(12) xor mul104_in(8) xor mul104_in(6) xor mul104_in(11);
mul104_out(12)<=mul104_in(12) xor mul104_in(9) xor mul104_in(1) xor mul104_in(11) xor mul104_in(7);

end Behavioral;